Dr. Seuss's The Cat in the Hat: A Very Marvelous Christmas is the 2012 direct-to-video sequel to Dr. Seuss's Holidays on the Loose, released on Tuesday, November 6, 2012!
- Announcer: In 2012, the season 5 premiere of "Adventure Time" was discovered under a desk at Cartoon Network Studios. Now all the world is waiting in fevered anticipation to watch "The Adventure Time Season 5 Premiere". Now to present the season 5 premiere, from the star of "Level Up!", Connor Del Rio.
- Announcer: Oh boy, what a sad person. I guess the season 5 premiere will remain lost. But, tape or no tape. "Adventure Time" will always live on in our hearts, minds and reruns. Now get lost. I mean, bye. No, really, get lost.
- John Cleese as The Cat in the Hat
- Tom Kenny as The Grinch
- Lewis MacLeod as Fox in Socks
- John Goodman as Horton the Elephant
- Rupert Degas as Mr. Knox
- Brian Blessed as Joey
- Kwesi Boakye as Sam I Am
- Greg Berger as Max
- Connor Del Rio as Narrator
- Chapter 1: Hat on Top of the Tree
- Chapter 2: Sam I Am Dinner
- Chapter 3: Hanging Stockings
- Chapter 4: Grinchy Face
- Chapter 5: Decorating Lights